Animal Phylogeny

• What is a "body plan"?

  The body plan describes the specific shape and structure of an animals body as it develops.
• Main features of body plan as they developed throughout evolution

  1. Development of true tissues
  2. Development of bilateral symmetry
  3. Protostome or Deuterostome development
• What is Eumetazoa?

  animals with "true" tissue.
• What animal is not considered a Eumetazoa? Why?

  Sponges. Because animals that are considered Eumetazoa have "true" tissues but sponges don't have "true" tissues.
• Eumetazoa have different symmetry. Either...

  Radial symmetry or bilateral symmetry.
• What is bilateral symmetry?

  Bilateral symmetry is when both sides of the animal mirror each other.
• Bilateral symmetry consist of what derms?

  Ectoderm, mesoderm, endoderm
• Animals with bilateral symmetry have body cavities aka what?

  Coelom.
• What is Coelom?

  Coelom is a body cavity which contains fluid or air-filled spaces in the animals body.
• Deuterostome

  The anus develops before the mouth in the embryo development.
• Porifera, specifically sponges lack true tissues.
• Porifera, Cnidaria have what symmetry?

  Radial symmetry
• Mollusca, Arthropoda have what symmetry?

  Bilateral symmetry
• Cnidarians have what type of specialised cells?

  Cnidocytes
• Lophotorochozoa has two different groups called?

  Lophophore and Trochophore
• Mollusca is are a very diverse phylum which consist of soft-bodies and typically have an outer shell. A few like slugs, octopus and squid don't have an outer shell but are considered in this phylum.
• What is endoderm, ectoderm, mesoderm?

  Endoderm: inside, ectoderm: outside, mesoderm: middle
• What is an example of Porifera?


  Sponges
• What are some examples of Cnidaria?

  Jellyfish, coral, sea anemone.
• What are some examples of Mollusca?


  Snails, octopuses, clams
• What are some examples of Arthropoda?


  Crustaceans like crab and Insects